A Birder's Guide to Wyoming
Scott, Oliver K. ; American Birding Association
Arizona Game Birds
Brown, David E.
Birds of the Carolinas (1st ed)
Potter, Eloise F.; Parnell, James F.; Teulings, Robert P.
America's 100 Most Wanted Birds: Finding the Rarest Regularly Occuring Birds in the Lower 48 States
Mlodinow, Steven G.; O'Brien, Michael
Sparrows and Finches of the Great Lakes Region and Eastern North America
Earley, Chris G.
Birds of Phoenix and Maricopa County Arizona. Third edition
Witzeman, Janet and Troy Corman
Seabirds of Hawaii: Natural History and Conservation [HC]
Harrison, Craig S.
ABA Field Checklist - Weatherproof field card
American Birding Association
The Birds of Ohio
PETERJOHN, Bruce G.
The Birds of Illinois
Bohlen, H. David
Birds of North America: A Guide to Field Identification. A Golden Field Guide
Robbins, Chandler S., Bertel Bruun, and Herbert S. Zim
Warblers of the Great Lakes Region and Eastern North America